How about some type of laser inspection system?  We have a small
Cyberoptics system (www.cyberoptics.com, 800-746-6315) that we use to measure the
thickness of thick film paste ans solder maks before and after it is
fired.  I believe that it has an accuracy of roughly 0.1 mils, and is
probably not that expensive.

Brett Goldstein
EVI, Inc.



> Date:          Wed, 22 Jul 1998 11:19:30 -0400
> From:          "Blanchet, Richard" <[log in to unmask]>
> Subject:       Fab : Solder mask thickness

> Hello all,
>
> Is there a non destructive way to measure solder mask thickness with
> precision, wet or dry ?  Thanks.
>
> Richard Blanchet
> Process Engineer, screening
> Viasystems Canada Inc.
> tel.: (514) 694-8900, ext. 4189
> fax: (514) 694-9776
> [log in to unmask]
>
>

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